<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hadd(1,'0')">添加权限</el-button>
        </div>
        <el-table border :data="list" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template slot-scope="{row}">
              <!-- 只有是页面级别的节点(type=1)，才能添加 -->
              <el-button v-if="row.type === 1" type="text" @click="hadd(2,row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(row.id)">编辑</el-button>
              <el-button type="text" @click="hDele(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>

    <!-- 弹层 -->
    <el-dialog
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :visible.sync="showDialog"
      :title="isEdit?'编辑':'添加'"
      @close="reserFrom"
    >
      <!-- 表单内容 -->
      <el-form ref="formData" :model="formData" :rules="rules" label-width="100px">
        <el-form-item label="权限名称" prop="name">
          <el-input v-model="formData.name" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model="formData.code" />
        </el-form-item>
        <el-form-item label="权限描述">
          <el-input v-model="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="启用"
            active-value="1"
            inactive-text="不启用"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right;">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script>
import { tranListToTreeData } from '../../utils/tree'

import { getPermissionList, addPermission, delPermission, getPermissionDetail, updatePermission } from '../../api/permisson'
export default {
  name: 'Permission',
  data() {
    const validname = (rule, value, callback) => {
      let existName = this.originList.filter(item => item.pid === this.formData.pid)
      console.log('existName', existName)
      if (this.isEdit) {
        existName = this.originList.filter(item => item.pid === this.formData.pid && item.id === this.formData.pid)
      }
      existName.map(item => item.name).includes(value)
        ? callback(new Error(value + '重复标识'))
        : callback()
    }
    const validcode = (rule, value, callback) => {
      let existConst = this.originList
      console.log('existConst', existConst)
      if (this.isEdit) {
        existConst = this.originList.filter(item => item.id !== this.formData.id)
      }
      existConst.map(item => item.code).includes(value)
        ? callback(new Error(value + '重复名称'))
        : callback()
    }
    return {
      list: [],
      showDialog: false, // 是否显示弹层
      isEdit: false,
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rules: {
        name: [
          { message: '起一个权限的名称吧', required: true, trigger: 'blur' },
          { validator: validname, trigger: 'blur' }
        ],
        code: [
          { message: '这个权限标识是什么', required: true, trigger: 'blur' },
          { validator: validcode, trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    // 清空表单
    reserFrom() {
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      this.$refs.formData.resetFields()
    },
    // 获取权限列表
    async loadPermissionList() {
      try {
        const res = await getPermissionList()
        console.log('获取权限列表', res)
        this.originList = res.data.map(({ id, pid, name, code }) => ({ id, pid, name: name.trim(), code }))
        this.list = tranListToTreeData(res.data)
      } catch (err) {
        console.log(err)
      }
    },
    hadd(type, id) {
      this.showDialog = true
      this.formData.type = type
      this.formData.pid = id
    },
    // 添加权限
    hSubmit() {
      this.$refs.formData.validate(valid => {
        if (valid) {
          this.isEdit ? this.doEdit() : this.doAdd()
        }
      })
    },
    async doAdd() {
      try {
        const res = await addPermission(this.formData)
        console.log(res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success('添加成功')
      } catch (err) {
        console.log(err)
        this.$message.error('添加失败')
      }
    },
    // 删除权限
    hDelete(id) {
      this.$confirm('是否确定删除').then(() => {
        this.hDele(id)
      }).catch(() => {})
    },
    async hDele(id) {
      try {
        const res = await delPermission(id)
        console.log(res)
        this.loadPermissionList()
        this.$message.success('删除成功')
      } catch (err) {
        console.log(err)
        this.$message.error('删除失败')
      }
    },
    // 修改权限
    async hEdit(id) {
      this.isEdit = true
      try {
        const res = await getPermissionDetail(id)
        console.log('getPermissionDetail', res)
        this.formData = res.data // 赋值之后，表单就有数据回填
        this.showDialog = true
      } catch (err) {
        console.log('getPermissionDetail', err)
      }
    },
    async doEdit() {
      try {
        const res = await updatePermission(this.formData)
        console.log(res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success('修改成功')
      } catch (err) {
        console.log(err)
        this.$message.error('修改失败')
      }
    }
  }
}
</script>
